package databaseInterface;

import java.util.ArrayList;

import dataPO.*;
public interface DiscTicketManageInterface {
		public void connect ();                                                                                                                                                                                                                                                                                                                       
	    
		public void insert (DiscountCouponsPO  d);
	    
		public  void delete (double disc);
	    
	    
		public  void update (DiscountCouponsPO d, double disc);
		
		public  boolean exist(double discRate);
		
		public  ArrayList<DiscountCouponsPO> query ();
	    
	    
	    
	    public  void close();
		
		
}
